74LCX16543MEAX

Overview

The onsemi 74LCX16543MEAX is a dual 8-bit registered bus transceiver housed in a 56-pin SSOP package. It operates within a supply voltage range of 2V to 3.6V and supports an operating temperature from -40°C to 85°C. The device features non-inverting logic with tri-state outputs capable of sourcing and sinking 24mA. It includes two independent control inputs for each byte, allowing flexible data direction management.

Feature Summary

• Provides 5V tolerant input and output capabilities for interfacing low-voltage logic with 5V signal environments.
• Integrates two D-type registers to temporarily store data flowing in either direction across the bus.
• Incorporates patented noise and electromagnetic interference (EMI) reduction circuits to maintain signal integrity during high-speed operation.

Applications

• Interface between low-voltage (2.5V or 3.3V) systems and 5V signal environments
• High-speed data buffering and registration in memory architectures
• Hot-swappable applications requiring support for带电插拔

Procurement Notes

Verify component authenticity as this part number may be obsolete or distributed through secondary channels. Confirm RoHS compliance status and check for specific manufacturing date codes relevant to your production timeline. Ensure the SSOP-56 package dimensions match your PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing interfaces that require level shifting between 2.5V/3.3V logic and 5V signals while maintaining data registration. The dual-byte structure with independent control inputs offers flexibility for complex bus topologies. Consider the 5V tolerance feature if the system must withstand voltage spikes or connect to legacy 5V peripherals without additional protection circuitry.

Part Context

This device belongs to the 74LCX family of low-voltage CMOS logic ICs. It shares functional similarities with other registered transceivers like the 74LVCH16543 but is optimized for lower voltage operation. The MEAX suffix typically denotes a specific tape-and-reel packaging variant intended for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers include 74LVCH16543APAG and SN74LVCH16543ADGGR. Verify pin compatibility and electrical specifications against these alternatives before implementation.